build hotspot

可恶，这个帖子原来是在jroller上的，中文变成这个样子了。

1. ???? j2sdk-1_4_2-src-scsl.zip???Linux??????
   
2. cd $ROOT/build/linux
   
3. make product ??????build/linux/linux_i486_compiler2/product/???????libjvm.so??
   
4. make debug ??????build/linux/linux_i486_compiler2/debug/???????libjvm_g.so??
   
5. ??$JRE_HOME/lib/i386/jvm.cfg?????????? product/debug
   
6. ??product????java -product Demo?????
   
7. ??debug????java -debug Demo???????????????????????????????????????????????????????i386?????????????????_g????????????????for file in *.so; do ln $file `echo $file|sed -e 's/\.so/_g.so/'`; done?
   
8. ???????????????java???????????
   $J2SE/share/src/bin/java.c $J2SE/src/java.h
   $J2SE/solaris/src/bin/java_md.c
   ????? gcc -g -DDEBUG -Di586 -D_GNU_SOURCE -o java_g java.c java_md.c -ldl
   ?????java_g???$JAVA_HOME/bin??
   
9. ??java_g -debug Demo????
   # To suppress the following error report, specify this argument
   # after -XX: or in .hotspotrc: SuppressErrorAt=/os_linux.cpp:1346
   #
   # HotSpot Virtual Machine Error, assertion failure
   # Please report this error at
   # http://java.sun.com/cgi-bin/bugreport.cgi
   #
   # Java VM: Java HotSpot(TM) Server VM (1.4.1-internal-debug mixed mode)
   #
   # assert(sigismember(&act.sa_mask, 32), "incompatible pthread library")
   #
   # Error ID: /home/wangzx/j2se-src/j2se/hotspot/src/os/linux/vm/os_linux.cpp, 1346
   #
   
10. ??java_g -debug -XX:SuppressErrorAt=/os_linux.cpp:1346 Demo???????????????????????product??????assert??????????????????????????????.hotspotrc??????????????java_g -debug Demo????????
    
11. ????GDB????????????gdb????????????